By Jason Franklin | August 25, 2026

Property Taxes in Woodland Hills: What Every New Buyer Needs to Know

If there's one part of buying a home in California that catches people off guard — more than the down payment, more than the closing costs, more than the mortgage payment — it's the property tax bill that shows up months after you move in.

Not the annual property tax that flows through your lender's impound account. That one you planned for. I'm talking about the supplemental tax bill — a separate charge that arrives 3 to 9 months after closing, goes directly to you (not your lender), and can run anywhere from $3,000 to $12,000 or more depending on when you closed and what the prior owner was paying.

Most new buyers in Woodland Hills and across the West Valley aren't warned about it. By the time it arrives, they've already stretched their budget to close, furnished the house, and absorbed the first few months of mortgage payments. The bill feels like an ambush.

This post explains the full property tax picture so you're not one of them.

How Prop 13 Works When You Buy

California's Proposition 13, passed in 1978, set the rules that still govern property taxes today — and understanding it is the foundation for everything else.

When you buy a home, the county assessor sets your assessed value at your purchase price. From that point forward, your assessed value can only increase by a maximum of 2% per year, regardless of what happens to the market. If you buy a home in Woodland Hills for $1.2 million, your starting assessed value is $1.2 million — and it can only rise by $24,000 or less each year you own it.

This is why your neighbor who bought 20 years ago might be paying taxes on an assessed value of $450,000 while you're paying on $1.2 million. Same street. Different rules. That's Prop 13 in action.

The base property tax rate is 1% of assessed value. On a $1.2 million purchase: $12,000 per year, or $1,000 per month. Simple enough.

But $12,000 isn't what you'll actually pay.

Your real total property tax rate in LA County

The 1% Prop 13 base rate is the starting point, not the finish line. Your actual tax bill includes several additional charges layered on top:

• Voter-approved bond measures — school construction bonds, public safety bonds, and infrastructure bonds passed by LA County and local voters over the decades. These typically add 0.1–0.3% to your effective rate.
• Special assessments — landscaping maintenance districts, lighting districts, and vector control assessments that apply to some parcels but not others.
• Mello-Roos taxes — special levies in newer developments that fund the roads, utilities, schools, and parks built for those communities. More on this below.

Add these together and most Woodland Hills buyers pay an effective property tax rate of 1.1–1.45% of their assessed value, depending on their specific parcel and which districts it falls within.

On a $1.2 million purchase: $13,200–$17,400 per year. On a $2 million home: $22,000–$29,000 per year.

Before you make an offer on any home, you can look up its current tax bill on the LA County Assessor's website. Knowing the prior owner's assessed value helps you estimate your supplemental bill — which I'll get to in a moment. It's one of the first things I pull up for clients during the offer stage.

How Property Taxes Are Paid

For most buyers using a mortgage, property taxes are collected through an impound account (your lender may call it an escrow account). Each month, your lender collects 1/12th of your estimated annual tax bill alongside your principal, interest, and insurance payment — then pays the county directly when taxes come due.

California property tax runs on a fiscal year from July 1 through June 30, paid in two installments:

• First installment (covers July 1–December 31) — due November 1, delinquent after December 10
• Second installment (covers January 1–June 30) — due February 1, delinquent after April 10

Miss either deadline by one day and you owe a 10% penalty — on the full installment, not just what's late. Your lender's impound account handles both payments automatically, so you don't have to track the dates as long as the account is funded.

But the impound account only covers your regular annual tax bill. It does not cover the supplemental bill. That's where the surprise comes in.

The Supplemental Tax Bill — What No One Warns You About

When you buy a California home, the county reassesses the property at your purchase price. But this reassessment doesn't happen the day you close. The county processes it over the following months — and in the meantime, the tax rolls still reflect the prior owner's old assessed value.

To capture the difference, the county issues a supplemental property tax bill: a one-time charge covering the gap between the prior owner's assessed value and your new purchase price, prorated for the months you've owned the home in the current fiscal year.

Here's how the math works with a real example:

The prior owner of your Woodland Hills home bought it 18 years ago. Their Prop 13 assessed value has grown at 2% per year since then and now sits at $580,000. You paid $1.2 million. The gap is $620,000.

The supplemental bill taxes that $620,000 difference at your local effective rate (approximately 1.2%), then prorates it based on how many months of the fiscal year remain after your closing date.

• If you close in August (11 months remain in the July–June fiscal year): $620,000 x 1.2% x (11/12) = approx. $6,820
• If you close in November (8 months remain): $620,000 x 1.2% x (8/12) = approx. $4,960
• If you close in April (3 months remain in current year, plus a second bill for the full next year): roughly $9,500–$10,000 total across two bills

That last point matters: if you close between January and May, you may receive two supplemental bills — one covering the final months of the current fiscal year and a second one for the entire next fiscal year. The county processes both separately, and they can arrive weeks apart.

Three things to know about how this bill works:

1. It's sent directly to you — not to your lender. Your impound account doesn't know it exists and won't cover it. The check comes from you.
2. It arrives 3 to 9 months after closing — sometimes longer if the county is processing a backlog. Some buyers receive it just as they're starting to feel settled, which compounds the shock.
3. It can look like a duplicate of your regular tax bill — same format, same county letterhead, different amounts. Read it carefully. Both are real.

The same payment deadlines apply: December 10 for the first installment, April 10 for the second. There's no grace period for confusion about what the bill is.

The smaller the gap between the prior owner's assessed value and your purchase price, the smaller your supplemental bill. If you're buying a home that was recently sold — where the prior assessed value is already close to market — the supplemental bill may be modest. If the prior owner has owned the home since the 1990s, budget accordingly.

This is one of the things I always walk my clients through before they close, because the timing and amount vary so much depending on the specific property. If you want a pre-close estimate for a home you're considering, reach out and I'll pull the numbers with you.

Mello-Roos: The Tax That Prop 13 Doesn't Cap

If you're buying in a newer development — anywhere near the Warner Center corridor, new-construction communities in the northern West Valley, or recently developed subdivisions — check for Mello-Roos taxes before you fall in love with the home.

Mello-Roos taxes, officially called Community Facilities District (CFD) taxes, fund the public infrastructure that was built to support newer developments: roads, parks, fire stations, libraries, and sometimes ongoing city services. They're levied as a separate line item on your property tax bill.

Unlike the Prop 13 base rate, Mello-Roos taxes are not capped at 2% annual increases. They're set by the Community Facilities District when it's created and can increase on their own schedule. Most run for 20 to 30 years before expiring. In the San Fernando Valley, Mello-Roos charges typically range from $1,500 to $4,500 per year for residential properties, though newer master-planned communities can run higher.

California law requires disclosure of Mello-Roos taxes — you'll see them in the Natural Hazard Disclosure report and on the property tax bill when you look it up in advance. But it's worth asking your agent about it specifically when you're evaluating a home, rather than finding out at the property tax calculation stage of escrow.

If you're considering new construction in the Valley, understanding your contingency protections is equally important — the contract terms on new construction are meaningfully different from a resale purchase.

The Homeowner's Exemption — A Small Win You Shouldn't Miss

California offers one modest offset for primary-residence buyers: the Homeowner's Exemption. If the property is your primary residence, you can apply for a $7,000 reduction in your assessed value. At a 1.2% effective rate, that saves you about $84 per year.

It won't change your budget, but it's free money. File the claim form with the LA County Assessor by February 15 of your first full year of ownership. Once approved, the exemption renews automatically every year you remain the owner and use the home as your primary residence. The form is available at assessor.lacounty.gov.

If you bought late in the year, the February 15 deadline may come up faster than you expect. Put it on your calendar before you close.

Three Steps to Take Before You Close

Here's what I recommend to every buyer I work with in the West Valley:

1. Look up the current tax bill for any home you're seriously considering. The LA County Assessor's website lets you search by address. You'll see the prior owner's assessed value and their current annual tax bill — which tells you how large the reassessment gap will be when you buy.
2. Ask your lender for the estimated effective rate for that parcel. This includes all bonds and assessments, so you know your true annual tax burden — not just the 1% base.
3. Set aside cash reserves for the supplemental bill before you close. If there's a large gap between the prior assessed value and your purchase price, budget $3,000–$12,000 or more depending on your closing month. Keep it in cash — you'll need it on a specific timeline with no warning.

Prop 13 is one of the things that makes California homeownership genuinely different from every other state. It protects you as a long-term owner — but the transition from "new buyer" to "long-term owner" comes with a one-time cost that most people aren't prepared for. The good news: now you are.

And if you're curious about how Prop 13 works from the seller's side — specifically how longtime West Valley homeowners can transfer their low property tax base to their next home when they sell — that's covered in detail in my guide to Prop 19 and property tax transfers.

Frequently Asked Questions

How much are property taxes in Woodland Hills, California?

New buyers in Woodland Hills pay property taxes based on their purchase price under California's Proposition 13 — starting at a 1% base rate, but rising to 1.1–1.5% of purchase price annually once LA County bond measures and local assessments are included. On a $1.2 million home, expect $13,200–$18,000 per year. Homes in newer developments with Mello-Roos Community Facilities District taxes may pay at the higher end of that range.

What is a supplemental property tax bill in California?

A supplemental property tax bill is a one-time charge issued by the county assessor after you buy a California home. It covers the difference between the prior owner's assessed value and your new purchase price, prorated for the months remaining in the current fiscal year (July 1–June 30). This bill is sent directly to you — not to your lender — and is not paid through your mortgage escrow account. It typically arrives 3 to 9 months after closing.

Does my mortgage company pay my property taxes for me in California?

Your lender pays your regular annual property taxes through an impound (escrow) account — collecting 1/12th of your estimated tax bill with each monthly mortgage payment. However, the supplemental property tax bill is sent directly to you and is not covered by your impound account. You are responsible for paying it by the county's deadlines: December 10 for the first installment and April 10 for the second.

How is my home assessed for property taxes when I buy in California?

Under Proposition 13, the county assessor resets your home's assessed value to your purchase price when you close. From that point, the assessed value can only increase by a maximum of 2% per year until the property sells again. This protects you from sudden tax hikes as the market appreciates, but it also means new buyers pay taxes on the full purchase price while long-term neighbors may pay on a much lower assessed value.

What is the Homeowner's Exemption and how do I apply in Los Angeles County?

The California Homeowner's Exemption reduces your property's assessed value by $7,000 if it's your primary residence, saving approximately $70–$84 per year in taxes. To claim it in Los Angeles County, file a Homeowner's Exemption claim form with the LA County Assessor by February 15 of your first full year of ownership. The form is available at assessor.lacounty.gov. Once approved, the exemption renews automatically as long as you remain the owner and use the home as your primary residence.

California's property tax system has more moving parts than most buyers realize going in — the base rate, the bonds, the supplemental bill, the Mello-Roos in certain areas. None of it is overly complicated once you see how the pieces fit together. The hard part is that most lenders and escrow officers don't walk buyers through all of it before closing.

If you're working through the numbers for a specific home in Woodland Hills, West Hills, Calabasas, or anywhere across the West Valley, I'm happy to help you estimate your first-year tax picture before you're under contract. Reach out anytime — a conversation now is much better than a surprise in the mail six months later.